Link adaptation in a multi-antenna system

We consider link adaptation for multi-antenna systems based on channel information also that at the transmitter. Using adaptive channel inversion (ACI), a step-wise trade-off between spatial multiplexing and diversity is realized. Due to pre- and post-processing, the channel is corrupted only by Gau...

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Bibliographic Details
Published inThe 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring Vol. 2; pp. 862 - 866 vol.2
Main Authors Jungnickel, V., Haustein, T., Pohl, V., von Helmolt, C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Channel capacity
Detectors
Eigenvalues and eigenfunctions
Gaussian noise
Information theory
Matrix decomposition
MIMO
Power control
Radio link
Radio transmitters
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Summary:We consider link adaptation for multi-antenna systems based on channel information also that at the transmitter. Using adaptive channel inversion (ACI), a step-wise trade-off between spatial multiplexing and diversity is realized. Due to pre- and post-processing, the channel is corrupted only by Gaussian noise in front of the detectors. By jointly optimizing the number of data streams and the common modulation, a nearly continuous adaptation of spectral efficiency is realized. Up to moderate powers, the channel capacity is approached in regular and singular MIMO channels, provided that scalar coding is applied.
ISBN:9780780377578
0780377575
ISSN:1090-3038
2577-2465
DOI:10.1109/VETECS.2003.1207748